Patents by Inventor Johannes Draayer

Johannes Draayer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for controlling a multistage space switching network
    Patent number: 4613969
    Abstract: This invention is a cost efficient method for controlling a multistage space switching network for high voltage applications. This method minimizes the number of control signal leads required to operate a multistage space switching network. If a switching network has N space switching stages, then the present invention provides for performing the space switching function with N+1 control signal leads. The present space switching method may also be employed for conventional non-high voltage space switching applications.
    Type: Grant
    Filed: November 5, 1984
    Date of Patent: September 23, 1986
    Assignee: GTE Communication Systems Corporation
    Inventor: Johannes Draayer
  • Arrangement for an electromechanical space switching network
    Patent number: 4611204
    Abstract: This invention is a cost efficient network arrangement for a space switching network for high voltage applications. This arrangement minimizes the number of control signal leads for a multistage switching network. If a switching network has N stages, then the present invention provides for performing the space switching operation with N+1 control signal leads. The present space switch arrangement may also be employed for conventional non-high voltage space switching applications.
    Type: Grant
    Filed: November 5, 1984
    Date of Patent: September 9, 1986
    Assignee: GTE Communication Systems Corporation
    Inventor: Johannes Draayer